期刊
PHYSICAL REVIEW B
卷 97, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.020403
关键词
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资金
- C-SPIN, one of the six centers of STARnet, a SRC Program - MARCO
- C-SPIN, one of the six centers of STARnet, a SRC Program - DARPA
- NSF [DMR-1708287]
- NSF NNCI Program
Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.
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